v3.19.2
Acquisition - Summary of Finite-Lived Intangible Assets Weighted-Average Remaining Useful Life (Detail) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Business Acquisition [Line Items]    
Total $ 899 $ 261
eFront [Member]    
Business Acquisition [Line Items]    
2019 (excluding the six months ended June 30, 2019) 32  
2020 60  
2021 58  
2022 64  
2023 70  
Thereafter 384  
Total $ 668